The window is wider than the door it is supposed to retract into. Whoever created the image either doesn't know how a car works or is deliberately hiding the fact that there would at least have to be a fixed, triangular window in the back corner like there is on the current model which looks clumsy.

This just got leaked. Render doesn't look close. Rolls had that odd kink in the cammo to throw everyone off:

In the spy shots you can see the "fake" door handles that were in the render, but were really just for show. It still has the real door handles up by the mirrors. That and the cladding to give a false sense of the roofline: